Cam is a wheel that is not round, or it is a round wheel that turns around an axle that is not at the center of the wheel. Cam is used to change the rotational movement into the reciprocating movement.
The holes are about 2.6 mm (0.1 inches) in diameter, but you can enlarge the holes using a right size drill bit.
This set includes four cams in 4 different shapes: Round eccentric cam, small Pear-shaped cam, snail cam, and large pear-shaped cam.
Below are the available bulk discount rates for each individual item when you purchase a certain amount